title: Narcotic addiction: a changing scene?
mesh_terms: D000293:Adolescent; D044383:Black People; D002755:Choice Behavior; D003061:Codeine; D003154:Community Medicine; D003415:Crime / Q000639:trends; D003932:Heroin; D006801:Humans; D008297:Male; D009293:Opioid-Related Disorders; D044465:White People
chemical_list: D003932:Heroin; D003061:Codeine